Spectacle-temple.



s. G. LAFLIN.

SPECTACLE TEMPLEI APPLIGATION FILED JULY 21, 190s.

93 1 ,776. Patented Aug. .24, 19o9.-

ATTORNEYS UNiTin sri-rains PATENT iernten.

STEPHEN C. LAFLIN, OF'SOUTHBRIDGE, MASSACHUSETTS, ASSIGNOR 'EO AMERICAN PTICAL COM? PANY, OF SOUTHBRIDGE, MASSAGHUSETTS, A CORPORATION Ole MASSACHUSETTS.

SPECTAGLEJLEMPLE.

bipectaele-leinplesg or' Ywhich the following4 is a clear, exact, and completedescription.

My invention relates particularly to that class ot ten'iples Well known in the art, in which the temple ismade up ot a central, imit'orm -or tapered core over'Which are placedv one or more layers ot tine Wire coiled into a snugly fitting tube, and has for itsk object the production ot temple in which the vbutt maybe completely and inexpensiyely formed by a simple sequence ot mechanical operations ii'hile at the same time serving permanently andsubstantially' to ioin the several parte ot the temple together into a complete whole.

in the accompanying drawings Figures l to illustrate one form ot my invention, 'iff' l illustrating the Vfirst assembly of the .separately made parts, a portion of such parts being shown in section; 2 is a similar View ot the sameassembly at a later stage of the manufacture. ln both Figs. l

l portions of the length. are omitted; is a perspectiye yieW oit the completed temple; Fig. #l is an axial section ot the special tubular piece or sleeve trom Which l linally term my completed butt; Fig. 5 is a section ot the same tubular butt piece taken at right angles to thc axis along the line ot' Fig. el; Figs. t3 and 7 are views similar to Fig. 2, but illustrating two additional forms of my invention.

Referring to Fig. l, B is a tube made oli tine fire tightly coiled and formed to slip snugly over the line Wire core A and the tapered butt a. A tubular metallic piece or sleeve C (shown in detail in Figs. d and 5) is then slipped over the core butt o until the internal shoulder c is in Contact with the butt end Z) olf the coiled Wire cover tube. rthe bore (Z of this sleeve is an easy lit for the core butt o While the increased bore d beyond the shoulder is sutlicient to slip just nicely over 'the butt end of the wire tube. The outside diameter ot the sleeve C is only slightly greater than the diameter al so as to leave the wall thickness c between the shoulder and inner end of the tube quite Specification of Letters Patent.

Patented Ang. 24C, i909.

1908. Serial No. @4,643

a nd draw out the thin Walled portion c of the sleeve C until it covers a portion of ythe butt end oi the Wire covering tube as seen at e in `Fig. the pressure necessaryr 'for this to tlow into the hollow spaces Which lie between the conyolutions ot the Wii'e'covering tube, thus iirmly joining the tubular butt piece to the Wire covering tube and uniting this reduction also l am able to tix the inner core Wire i permanently in place. "the pressure upon the coil at' the taper causes the spiral Wire to be depressedv into the metal ot' the core t thus 'forming a corresponding spiral form depression therein. ',lhus additional means are provided t'or keeping the spiral Wire trom 'slipping upon connection between them more' secure( ln practice lV prefer toreduce or taper the section of' the temple 'tor its entire length (Fig. T) instead ot only over the length represented bythe taper,- as 'lind advantages in the 'Way of increased flexibility, better appea 'ance and economy, such complete'ifeduction of course, operates to more 'tirinly anchor kthe vcore Wire Finally, having performed the previously described operations, l flatten, by suitable means, the entire end of the butt outside ol the taper and then shap, and inish it, as at z in Il, to suitably engage the corresponding hinge member ot the spectacle trame. The tar end oit the temple l provide With a suitable tip as (j.

llreiiously temples olE the Wire wound type have genc'ally been held together at the butt by soldering. ySolder unsightly and eren when applied with a maximum of skill is tar trom reliable as applied in the rapid manufacture ot duplicate parts, re-

piiring, as it does, the greatest cleanliness and deliniteness ot temperature and the permanency of a soldered joint is extremely uncertain. Add to this that the heat required 'for soloering tends to sotten the wire and injure its elasticity while the th'xes used, unless most completely removed, tend to rot the metal; solder, moreover. becomes unsightly in time because ot discoloration. in my improved construction l eliminate heut ing and the use ot solder completely and secure a much more permanent and perfect thin. VBy suitable mechanism l, .now reduce joining together ot the parts than could be reduction causes the metal ot the said sleevey them, in eliect, into an integral Whole.A By

the core piece and t'or thereby making the obtained by its use. I nd, also, that my construction is less costly than the older 4one Where the parts are held together With solder.

I desire to call attention to the taper which connects the body of the temple to the butt in my construction and under which the butt end of the Wire covering tube is held. By using this form I take advantage of a well known principle of mechanics of gradually increasing the strength of the temple proportionally t-o the probable strain.

The exact sequence of operations, character of materials and proportional relations of dimensions may be varied considerably Without losing the advantageous features of my invention and I do not, therefore, confine myself to them.

In the construction illustrated by Figs. l and 2 I have employed a core having an enlarged butt. Fig. 6 illustrates a construction in which the core A is of a uniform diameter' throughout and Fig. 7 represents another manner of carrying' o ut my invention according to which the core A2 is tapered uniformly,throughout its length. The manner of covering this core with a coiled wire and holding the end of this wire in aY sleeve under a pressure such as to enable the coil both in the sleeve and in the core, is the same as in the construction first described.

I claim as my invention:

l. A spectacle temple comprising a core, a coiled Wire covering for the same and a metal sleeve in which one end of the core and one end of the covering is received and held under pressure.

2. A spectacle temple comprising a core, a wire coiled thereon, a sleeve having a portion engaging the core, and, adjacent thereto, a chamber or enlargement to receive the end of the coiled wire held under pressure.

3. A spectacle temple comprising a core having a flaring portion, a Wire coiled on said core at the flaring portion thereof and a sleeve surrounding the flaring portion of the coil.

4. A spectacle temple comprising a core, a Wire Wrapping upon said core, and a sleeve surrounding a portion of said Wrapping, said sleeve being provided With internally projecting portions which fit between the convolutions of said Wrapping. y

5. A spectacle temple comprising a core having a flaring portion, a Wire Wrapping on said core at the fia-ring portion thereof, and a sleeve surrounding said iiaring portion, said sleeve being provided with internallv Drojecting portions which fit between the convolutions of said wrapping.

(5. A spectacle temple comprising a core, a Wire wrapping upon said core, and a parallel sided butt adapted for hinging attachment to the lens mount, said butt being provided with a sleeve surrounding a portion of said Wrapping and of said core, and being further provided with internally projecting1 portions which iit between the convolutions of said Wrapping.

In testimony whereof I have hereunto set my hand in t-he presence of tWo subscribing Witnesses.

STEPHEN C. LAFLIN.

Witnesses:

J. C. WELLS, N. M. BAKER. 

